Coin bank



FIG. 1 is a front perspective view of a coin bank showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a front perspective view thereof, shown in a used condition.

The broken lines in the drawings depict unclaimed environmental subject matter that form no part of the claimed design. 

CLAIM The ornamental design for a coin bank, as shown and described. 